I've never really used the F-keys since my Visual Studio days (F5/F9/F10/F11) when I used to to .NET 2.0 on Windows. However with the touchbar, when you press Fn, the touchbar displays the F-keys instantly (you can choose for them to be displayed by default).
For Android Studio, I also remap the keys to Cmd+something out of consistency with XCode. For instance, I mapped build to Cmd+B etc...
For those of us who use a variety of JetBrains products, the F-key shortcuts are the consistency. Having them faked on a minuscule screen, rather than being findable by touch, would make the new MacBook unusable for me.
Sad, as I find OSX to be the best in a bleak landscape of OS's, but given Apple's obtuse insistence on knowing what's best for all, to the extent of removing critical components of the universal standard keyboard, my current MB Pro will certainly be my last. Ugh Windows!
For Android Studio, I also remap the keys to Cmd+something out of consistency with XCode. For instance, I mapped build to Cmd+B etc...